SAR instrument using stable active front-end technologies

Author

Zahn, R. ; Braumann, H. ; Braubach, H.

Author_Institution

Astrium GmbH, Friedrichshafen, Germany

Volume

5

fYear

2001

fDate

2001

Firstpage

2031

Abstract

The next generation of synthetic aperture radar (SAR) for high resolution will utilize active front-ends with the capability of beam-steering. The challenge for the DESA technology program for an active front-end was to control several hundreds of transmit/receive modules (T/R modules) independently with high speed from pulse to pulse, and to maintain the phase and amplitudes constant over -20°C to +60°C. Also for interferometry the stability of the RF front-end and electronics plays a dominant role. In this context the X-SAR/SRTM hardware is presented. The ambitious measurement of the phase variations in the instrument channels is essential for the instrument calibration and picture quality

Keywords

beam steering; calibration; phase measurement; radar receivers; radar resolution; radar transmitters; radiowave interferometry; remote sensing by radar; stability; synthetic aperture radar; transceivers; DESA technology program; SAR; T/R modules; X-SAR/SRTM hardware; beam steering; instrument calibration; interferometry; phase measurement; picture quality; radar resolution; stable active front-end; synthetic aperture radar; transmit/receive modules; Calibration; Electronic mail; Hardware; Instruments; Interferometry; Phase measurement; Radio frequency; Stability; Synthetic aperture radar; Temperature distribution;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International

Conference_Location

Sydney, NSW

Print_ISBN

0-7803-7031-7

Type

conf

DOI

10.1109/IGARSS.2001.977893

Filename

977893